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St125 carb

Featured Replies

Hi . Would anyone be able to point me in the direction of the carb setup float height and specs for a 04 st125 please . 

Dellorto PHBL 26BS  carb on a 125 2004 = SLIDE 60                      NEEDLE CLIP 3RD DOWN FROM TOP

                                                                MAIN JET 122                     CHOKE JET 09

                                                                 PILOT JET 36                     FUEL SCREW 4 TURNS OUT 

                                                                  NEEDLE   D36                   FLOAT HEIGHT  18.5MM

                                                              NEEDLE JET 270K                 STANDARD SPROCKETS 9 FRONT    44 REAR

There is a modification to the fuel tank petcock  that was recommended at the time to stop the carb giving a  a lean condition this is done by removing the petrol tap from the tank taking off all its gaskets and then pull off the filter gauze underneath it sits a plastic tube, this tube needs 6mm cut off it and then make sure the cut end is open for flow of fuel then replace the gauze filter and put everything back together before fitting back on the tank , alternatively just always use the bike with the fuel tap set to the reserve position. 

All this information is available at SHERCO USA.COM

Edited by Tr1AL

  • Author

Thankyou for the info 

 That is a great help.

 

 

Neil

On 3/7/2025 at 5:38 PM, stogga said:

Thankyou for the info 

 That is a great help.

 

 

Neil

Great! obviously its not my doing I just know where to look . If you need SHERCO Info/parts  go to splatshop.co.uk and ask to speak to Chris Pearson he has a lot of knowledge about their bikes. Best wishes Alan.

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